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Finding the Fourth Proportional to 66,107.78, 91,228.21 and 35,892.49

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Solution

The fourth proportional to 66,107.78, 91,228.21 and 35,892.49 is: 49,531.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,107.78 : 91,228.21 = 35,892.49 : x
  2. Step 2: Convert to fraction form
    66,107.78/91,228.21 = 35,892.49/x
  3. Step 3: Cross multiply
    66,107.78x = 91,228.21 × 35,892.49
  4. Step 4: Simplify right side
    66,107.78x = 3,274,407,615.14
  5. Step 5: Solve for x
    x = 3,274,407,615.14/66,107.78
  6. Step 6: Final answer
    x = 49,531.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.